Joe burst into the living room

One Sunday morning Joe burst into the living room and said:

“Dad, Mom, I have some great news for you! I am getting married to the most beautiful girl in town.

She lives a block away and her name is Susan.”

After dinner, Joe’s dad took him aside and said:

“Son, I have to talk with you. Your mother and I have been married 30 years.

She’s a wonderful wife but she has never offered much excitement in the bedroom, so I used to fool around with women a lot.

Susan is actually your half-sister, and I’m afraid you can’t marry her.”

Joe was heartbroken.

After eight months he eventually started dating girls again.

A year later he came home and very proudly announced:

“Dianne said yes! We are getting married in June.”

Again his father insisted on another private conversation and broke the sad news:

“Diane is your half-sister too, Joe, I am very sorry about this.”

Joe was furious. He finally decided to go to his mother with the news.

“Dad has done so much harm. I guess I am never going to get married,” he complained.

“Every time I fall in love, Dad tells me the girl is my half-sister.”

His mother just shook her head and said:

“Don’t pay any attention to what he says, dear. He’s not really your father.”